Hi - I searched but couldn't find anyone who'd posted about a similar problem. If there's already been a thread on this, please point me in the right direction.

I'm on Logic Express 9 on a 2.2 ghz quad core. I made a little EXS24 instrument (just stabs from an old disco loop to add interest and movement to the repetition of the full sample) but when I gave the project files to the mastering engineer, he didn't have the instrument (obviously). Next time we met we flew the instrument over to his iMac, but we just could not get it to open on his machine. We could see it but it was greyed out and nothing we tried worked. Any ideas?

I had yet to upgrade to Lion at the time (I'm on it now) whereas he had, if that makes any difference. Thanks!

Yeah, we did. Perhaps we made some mistake in where exactly we placed them, though? We were trying to load them from the desktop (this guy never uses EXS24). I feel like this might be at the root of the problem..! Thanks for the reply.

The sampler instrument needs to be in the sampler instruments folder contained in the User Library, within Application Support -- Logic. The samples themselves can reside anywhere.

Is your EXS 24 instrument named with the suffix .exs added to the end? If not, try adding it and see if that makes it recognizable within Logic. It's possible (but unlikely) the file type information somehow got corrupted when transferring between systems.